MgnCost Struct Reference

Cost proxy used in MgnBoost. More...

#include <mgnboost.h>

Inheritance diagram for MgnCost:

[legend]Collaboration diagram for MgnCost:

[legend]List of all members.

Public Member Functions
	MgnCost (const cost::Cost &c=cost::_cost)
virtual REAL	cost (const REAL &F, const REAL &y) const
virtual REAL	deriv1 (const REAL &F, const REAL &y) const
Public Attributes
const cost::Cost &	orig_cost
REAL	lambda
	current minimal margin
REAL	wsum
	current sum of weak learner weights

---

Detailed Description

Cost proxy used in MgnBoost.

This class is a proxy to any other ``base'' cost functor. The minimal margin is subtracted from the margin of each examples, and then the base cost functor is called.

Definition at line 21 of file mgnboost.h.

---

Constructor & Destructor Documentation

MgnCost (  const cost::Cost &  c = cost::_cost  )  [inline]

Definition at line 26 of file mgnboost.h.

---

Member Function Documentation

virtual REAL cost (  const REAL &  F, const REAL &  y )  const [inline, virtual]

Reimplemented from AdaCost< REAL >. Definition at line 28 of file mgnboost.h. References AdaCost::cost(), MgnCost::lambda, MgnCost::orig_cost, and MgnCost::wsum.

virtual REAL deriv1 (  const REAL &  F, const REAL &  y )  const [inline, virtual]

Reimplemented from AdaCost< REAL >. Definition at line 31 of file mgnboost.h. References AdaCost::deriv1(), MgnCost::lambda, MgnCost::orig_cost, and MgnCost::wsum.

---

Member Data Documentation

REAL lambda

current minimal margin Definition at line 23 of file mgnboost.h. Referenced by MgnCost::cost(), and MgnCost::deriv1().

const cost::Cost& orig_cost

Definition at line 22 of file mgnboost.h. Referenced by MgnCost::cost(), and MgnCost::deriv1().

REAL wsum

current sum of weak learner weights Definition at line 24 of file mgnboost.h. Referenced by MgnCost::cost(), and MgnCost::deriv1().

---

The documentation for this struct was generated from the following file:

• mgnboost.h

---